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NEUTRON-SCATTERING STUDY OF THE ANTIFERROQUADRUPOLAR STRUCTURE AND ORDER-PARAMETER OF UPD3

MCEWEN, KA; STEIGENBERGER, U; CLAUSEN, KN; BI, YJ; WALKER, MB; KAPPLER, C; (1995) NEUTRON-SCATTERING STUDY OF THE ANTIFERROQUADRUPOLAR STRUCTURE AND ORDER-PARAMETER OF UPD3. In: PHYSICA B. (pp. 128 - 130). ELSEVIER SCIENCE BV

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Abstract

UPd3 exhibits phase transitions at T-1 approximate to 7 K and T-2 approximate to 5 K. Polarised-neutron diffraction measurements showed that a structural modulation with wavevector (1/2, 0, 0) takes place below T-1. A more detailed neutron-diffraction study of this phase is reported: group-theory analysis of the results indicates that the ordered phase below T-1 is a triple-q antiferroquadrupolar structure involving Q(x2-y2), Q(xz) and Q(zz) quadrupole moments of the uranium ions.

Type: Proceedings paper
Title: NEUTRON-SCATTERING STUDY OF THE ANTIFERROQUADRUPOLAR STRUCTURE AND ORDER-PARAMETER OF UPD3
Event: Yamada Conference XXXXI/International Conference on Neutron Scattering (ICNS 94)
Location: SENDAI, JAPAN
Dates: 1994-10-11 - 1994-10-14
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1309931
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